Update app.py

app.py

@@ -12,6 +12,9 @@ from trellis.pipelines import TrellisImageTo3DPipeline
 from trellis.representations import Gaussian, MeshExtractResult
 from trellis.utils import render_utils, postprocessing_utils
 
+# Add this before your preprocessing functions
+pipeline = TrellisImageTo3DPipeline()
+
 # Constants
 MAX_SEED = np.iinfo(np.int32).max
 TMP_DIR = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'tmp')